xml파일이 없는 자바 클래스를 만들었습니다
위쪽에 종료버튼을 붙이려고 하는데 어떻게해야할까요??
public class FreeLine extends AppCompatActivity {
private MyView vw;
ArrayList<Vertex> arVertex;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
vw = new MyView(this);
setContentView(vw);
arVertex = new ArrayList<Vertex>();
}
public class Vertex {
Vertex(float ax, float ay, boolean ad) {
x = ax;
y = ay;
draw = ad;
}
float x;
float y;
boolean draw;
}
protected class MyView extends View {
Paint mPaint;
public MyView(Context context) {
super(context);
// Paint 객체 미리 초기화
mPaint = new Paint();
mPaint.setColor(Color.BLACK);
mPaint.setStrokeWidth(3);
mPaint.setAntiAlias(true);
}
public void onDraw(Canvas canvas) {
canvas.drawColor(Color.LTGRAY);
// 정점을 순회하면서 선분으로 잇는다.
for (int i=0;i<arVertex.size();i++) {
if (arVertex.get(i).draw) {
canvas.drawLine(arVertex.get(i-1).x, arVertex.get(i-1).y,
arVertex.get(i).x, arVertex.get(i).y, mPaint);
}
}
}
// 터치 이동 시마다 정점을 추가한다.
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
arVertex.add(new Vertex(event.getX(), event.getY(), false));
return true;
}
if (event.getAction() == MotionEvent.ACTION_MOVE) {
arVertex.add(new Vertex(event.getX(), event.getY(), true));
invalidate();
return true;
}
return false;
}
}
}